1. Saber toothed tiger
Saber toothed tiger, once a forest overlord, has long surpassed lions or tigers in size, and its biggest feature is its huge, blade like upper barking teeth. Although Saber Toothed tigers were extinct as early as 10000 years ago, hundreds of dead Saber Toothed tigers were found in an asphalt Lake in Los Angeles, USA. However, because the body of saber toothed tiger is preserved in asphalt, it is difficult to extract the DNA of saber toothed tiger. If this problem is solved, saber toothed tiger is expected to revive.
Dodo extinct in 1690 ad, time can be said to be very close. However, only a small part of mitochondrial DNA fragment has been obtained from dodo, and there is no more discovery. But this does not mean that science will stop here. If we have the chance to find the DNA fragment of Dodo and transplant it to its close relative pigeon in the future, it will be revived.
At present, among all the extinct animals, it seems that the voice of reviving mammoth is the highest. In January 2011, a scientific research team from Japan announced the mammoth resurrection plan, mainly using cloning technology to clone mammoths like sheep. In 2012, a mammoth wreck was found in a permafrost in eastern Russia, and the well preserved cell structure was found in the mammoth’s body, which made it possible for the mammoth to revive.
At present, the biggest obstacle to the revival of extinct animals is:
In the mammoth resurrection plan, it was proposed that mammoths could be resurrected within six years, that is, by the end of 2017. But why does it take so long, maybe even more, from the discovery of DNA to its successful resurrection? The first step is to revive the cells; the second step is to restore the full functionality of the cells and form embryonic cells; the third step is to find a surrogate mother and give birth to an individual. Generally, it is difficult to resurrect its cells. After all, it is difficult to find its DNA fragments. However, if DNA can be found in the above three situations, can it be resurrected successfully?
The most difficult step for a mammoth to resurrect is to find a surrogate mother. After the new cells divide and develop into embryos, the biggest difficulty is how to make mammoth embryos implantation in the womb of surrogate mother, develop and give birth to mammoth. For the transferred embryos, the mother will inevitably produce immune rejection, mammoth embryos may be eliminated before the formation of organs.
But should these extinct creatures be revived? Xiao Bian is waiting for you in the comment area. Let’s discuss it together.